St Giles' Parish Church (WelshEglwys San Silyn) is the parish church of WrexhamWales. The church is recognised as one of the finest examples of ecclesiastical architecture in Wales and is a Grade I listed building.

St Giles' occupies a site of continuous Christian worship for at least 800 years. The main body of the current church was built at the end of the 15th century and beginning of the 16th centuries. It is widely held to be among the greatest of the medieval buildings still standing in Wales.